Basement Air Project

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Old 05-16-17, 11:57 AM
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Basement Air Project

Weekend Home Project Guy Here.
Name:  Cellar Air Flow Diagram.jpg
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Size:  37.6 KBName:  Cellar Air Flow Diagram.jpg
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Size:  37.6 KBWe live in a home that was built in 1904. The cellar has stone walls. A previous owner started to pour cement floors and completed about 80% of the cellar. The air quality is heavy, musty and overall poor. I was thinking about purchasing some reversible fans that would be strong enough, yet still quiet, to move the air from the basement to outside and also introduce outside air to the cellar.
The attached diagram is my best attempt at describing the situation for you to view.
Run # 1 into the crawl space would be about 20'. From the window to the crawl space opening the 2" pvc would be mounted to the floor joists and into the crawl space it would be elevated from the dirt. The pvc would have holes drilled into it for air flow
Run # 2 and 3 would be aproximately 30' same situation with the pvc being mounted to the floor joists with hangers.
Looking for suggestions on (3) fans that are reversible and can handle pulling / pushing the air flow. The quieter the better.

Also any suggestions on improving or altering the design are welcome.

Thank you for your time today.
 
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Old 05-16-17, 03:07 PM
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While air circulation should help I'd think you'd be better off laying plastic over the exposed dirt and using a dehumidifier.
 
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Old 05-17-17, 09:03 AM
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Thank you Mark for your suggestion. We have considered just adding a dehumidifier to the basement, our problem is having the water collected by the dehumidifier removed. Our Cellar is below the sewer lines so we would either need to install a sump pump to purge the collected water our of the cellar or mount a dehumidifier to the floor joists and run a drain line out one of the windows. We would prefer not to do either.
The amount of PVC pipe needed plus the estimated cost of the ventilation fans to move the air out of the cellar and into the cellar actually comes in under the cost of purchasing a dehumidifier.
I've also been considering installing on two of the fans a sensor that would turn the fans on when the humidity reached a set level, which in turn could possibly save on energy costs.
Even with the sensors the price comes in lower than purchasing a dehumidifier at this time.
Great idea to lay plastic down in the crawl space area and then run the pvc on top of it. This should allow us to use less pvc in that area.
I appreciate your ideas. Thank you
 
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Old 05-17-17, 01:43 PM
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Except for a small storm cellar I don't have a basement but have several friends with basements and dehumidifiers ..... they just empty them as needed. One has to empty his every day, not sure about the others. Ventilation should help but if the humidity isn't reduced I'm not sure if you've helped things much.
 
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Old 05-19-17, 06:19 AM
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Pump!! https://www.lowes.com/pd/Utilitech-P...e-Pump/3826837

!00% need a vapor barrier first before doing anything. You might find you don't need to do a thing after that. If needed a dehumidifier would be next.

Santa Fe Compact2 - Santa Fe - Basement and Crawl Space Dehumidifiers
 
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